linux-kernel - Re: [PATCH v3 01/12] dt-bindings: remoteproc: qcom,pas: Add iommus property

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Message-ID: <f3b384cf-bb2d-4476-b97c-1f63dc64671e@linaro.org>
Date: Sun, 21 Sep 2025 22:32:56 +0100
From: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To: Mukesh Ojha <mukesh.ojha@....qualcomm.com>,
 Bjorn Andersson <andersson@...nel.org>,
 Mathieu Poirier <mathieu.poirier@...aro.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Manivannan Sadhasivam <mani@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 01/12] dt-bindings: remoteproc: qcom,pas: Add iommus
 property

On 20/09/2025 20:40, Mukesh Ojha wrote:
> Most Qualcomm platforms feature Gunyah hypervisor which handles IOMMU
> configuration for remote processor and when it is not present, the
> operating system must perform these configurations instead and for that
> firmware stream should be presented to the operating system. Hence, add
> iommus property as optional property for PAS supported devices.
> 
> Signed-off-by: Mukesh Ojha <mukesh.ojha@....qualcomm.com>
> ---
>   Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml
> index 63a82e7a8bf8..8bd7d718be57 100644
> --- a/Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml
> +++ b/Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml
> @@ -44,6 +44,9 @@ properties:
>         - const: stop-ack
>         - const: shutdown-ack
> 
> +  iommus:
> +    minItems: 1
> +
>     power-domains:
>       minItems: 1
>       maxItems: 3
> 
> --
> 2.50.1
> 
> 
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>